Flexible display panel packaging structure and preparation method thereof
A packaging structure and flexible display technology, applied in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve problems such as reducing the service life of display panels, achieve perfect film packaging structure, prolong the path of water and oxygen intrusion, The effect of improving the service life
Pending Publication Date: 2021-12-17
FUJIAN HUAJIACAI CO LTD
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Problems solved by technology
[0005] The current thin-film packaging technology mainly uses multi-layer inorganic and organic films to stack, in which the inorganic layer plays the main role of sealing, and the organic layer plays a buffer role to relieve the stress accumulation between the film layers. The existing thin-film packaging structure is as shown in the attached manual. figure 1 As shown, water and oxygen will invade through the defects or pinholes of the material itself, and advance layer by layer, and finally reach the surface of the organic light-emitting material of the OLED display panel, and react with it, thereby reducing the service life of the display panel
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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] The traditional thin-film packaging structure is generally composed of three or five layers of thin films stacked. The more layers of thin-film stacks, the better the sealing performance of the package. However, due to the increase in the number of film layers, the overall internal stress and thickness of the thin-film package will also increase, resulting in The negative impact and the improvement of airtightness are often proportional, so the number of...
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Abstract
The invention discloses a flexible display panel packaging structure and a preparation method thereof. The flexible display panel packaging structure comprises a flexible substrate; a TFT circuit is arranged on the flexible substrate; an OLED device is evaporated on the TFT circuit; three thin film layers are arranged on the OLED device; the three thin film layers are respectively a first inorganic layer, a second inorganic layer and an organic layer; the top of the second inorganic layer is provided with a peripheral reinforcing layer; the first inorganic layer comprises a first inorganic layer regular trapezoidal structure and a first inorganic layer inverted trapezoidal structure; the second inorganic layer comprises a second inorganic layer regular trapezoidal structure and a second inorganic layer inverted trapezoidal structure. Two different inorganic materials are stacked at the position of each inorganic layer, defects or pinholes of the materials are made up by each other, the number of defects in an original whole layer of inorganic film is reduced, water and oxygen possibly invading paths are reduced; in each inorganic layer, the regular trapezoid and inverted trapezoid structures are stacked in a staggered mode, the water and oxygen invading paths are prolonged, and the service life of a flexible display panel is prolonged.
Description
technical field [0001] The invention belongs to the field of display technology, and in particular relates to a packaging structure of a flexible display panel, and also relates to a method for preparing the packaging structure of a flexible display panel. Background technique [0002] In recent years, with the continuous improvement of display technology, the proportion of the application of flexible display panels in the entire display panel has also increased. In the future, flexible display panels will be widely used with the continuous penetration of personal smart terminals. [0003] At present, flexible display panels refer to flexible OLED display panels. Only OLED display technology can be flexible. However, the core of OLED display technology lies in the application of organic light-emitting materials, but these organic light-emitting materials are extremely sensitive to water and oxygen. Reliable packaging technology can protect these organic light-emitting materi...
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IPC IPC(8): H01L51/52H01L51/56H01L27/32H01L21/77
CPCH10K59/12H10K50/8445H10K59/1201H10K71/00
Inventor 骆丽兵沈志昇
Owner FUJIAN HUAJIACAI CO LTD